Function: Take your pet alogn with you everywhere you go! Wheels: Two large wheels make for a smooth ride on any terrain. Dog Bike: Get a grey PawHut Pet Bicycle Trailer. Safety: Also features reflectors, an adjustable saefty rope, and a flag for visibility. Strong: With a steel frame for support and stability on the roads. Material: Made from weather resistant oxford fabric. Pawhut Pet Bicycle Trailer Steel Living Social Living Social